Orca is a Warlord Mercenary who always shows up in areas with large conflict.
She is a firm believer in money and power. To Orca, it's natural for the powerful and wealthy to dominate over the weak, and taking down stronger foes is a must for taking a higher position. Orca is determined to be on top of this food chain, and she will pay any cost to do so. Any job worth money must be taken, and she can sleep when she's dead. Orca's completely addicted to stimulants like energy drinks and coffee. Due to her lack of sleep, she's constantly exhausted and irritable, but her determination to become an 'apex predator' never wavers.
However, she completely abandoned social norms, customs and responsibility. To Orca, 'those things aren't worth any money or fun'. Many subordinates follow Orca for her skill and high success rates on jobs, but Orca herself doesn't manage, take care of or trust them. She just gathers people for fun when she feels like it, then neglects them from losing interest.
Recently, Orca was hired by the Invaders attacking Adela, and fought a great battle against the kingdom's navy. Marina, Adela's Grand Admiral, fought against Orca in the battle. The tense battle resulted in Orca taking Marina's eye, while she took Orca's arm. This is why Marina wears an eye patch on her left eye, while Orca has a prosthetic left arm. Orca obsesses over Marina, who cut off her arm, because she believes she's the only one worthy and capable of killing Marina. After hearing the news about Marina staying in Heavenhold, Orca headed there herself while looking forward to the moment she finally kills her nemesis and becomes more powerful.